# 4 to 8 swap?!?!?!?

**URL:** <https://forums.speedlife.net/t/4-to-8-swap/249920>\
**Category:** Builds\
**Created:** [January 24, 2010, 3:25pm UTC](https://forums.speedlife.net/t/4-to-8-swap/249920 "2010-01-24T15:25:39Z")\
**Posts on this page:** 1\
**Showing post:** 83

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**Author:** ![Johawk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/johawk/32/6284_2.png) [@Johawk](https://forums.speedlife.net/u/Johawk)\
**Post date:** [January 27, 2010, 3:05am UTC](https://forums.speedlife.net/t/4-to-8-swap/249920/83 "2010-01-27T03:05:04Z")

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> [@My HID Retro fit](https://forums.speedlife.net/t/my-hid-retro-fit/28700/33):
>
> lt1 does not have low compression, hence why it went to a reverse cooling system in hopes to run more compression, i believe its 10:1 cr

I was trying to say the 5.3 LSX is low compression, 9.5:1. LT1 is 10.5:1 unless it was a B-body iron head version that was 9.8:1. Stock LS1 is 10.1:1 and LS6 10.5:1

We all cleared up?

Im all for this LT1 swap especially considering its on a tight budget and Fluffy doesn’t need to kill himself yet.

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